Microsoft supports two-factor authentication and whenever you access or sign into a new device, it will ask for a security code to confirm your identity. But if Microsoft not sending a verification code then don't worry just try these tricks to resolve the Microsoft email verificatioissue -
1. Check your network connection
2. Check your spam folder
3. Check your carrier plan
4. Disable VPN
5. Check Junk email
6. Enable a passwordless account
For more read - https://emailspedia.com/